When to Use

Use this tool when you need to attempt to download pdf of a crossref paper.

args:
    paper_id: crossref doi (e.g., '10.1038/nature12373').
    save_path: directory to save the pdf (default: './downloads').
returns:
    str: message indicating that direct pdf download is not supported.
    
note:
    crossref is a citation database and doesn't provide direct pdf downloads.
    use the doi to access the paper through the publisher's website.
. This is part of the Paper Search provider on xpay✦.

MCP Connection

Connect to xpay✦ to access this tool (and 24+ others):

{
  "mcpServers": {
    "xpay": {
      "url": "https://mcp.xpay.sh/mcp?key=YOUR_API_KEY"
    }
  }
}

For Claude Code:

claude mcp add --transport http xpay "https://mcp.xpay.sh/mcp?key=YOUR_API_KEY"

How to Execute

Use the xpay✦ meta-tools to run this tool:

1. xpay_details — Get full input schema: xpay_details("paper-search/download_crossref")
2. xpay_run — Execute: xpay_run("paper-search/download_crossref", { ...inputs })

Input Parameters

Pricing

• Cost: $0.01/call
• Balance check: Use xpay_balance to check remaining credits
• Get your API key at xpay.tools — $5 free credits included

Related Skills

• Paper Search (all tools) — 25 tools
• Search — $0.01/call
• Fetch — $0.01/call
• Search Arxiv — $0.01/call
• Search Pubmed — $0.01/call
• Search Biorxiv — $0.01/call

Links

• Tool page: https://xpay.tools/paper-search/download-crossref/
• Provider: https://xpay.tools/paper-search/
• All tools: https://xpay.tools/explore